Table 2.

Correlation between FDG joint uptake^{^a} and disease activity variables.

	TJC28		SJC28		DAS28		CDAI		SDAI		HAQ		CRP
	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P
wj25SUV	0.20	0.31	0.39	0.04	0.32	0.09	0.32	0.09	0.42	0.02	0.11	0.55	−0.002	0.99
wj50SUV	0.17	0.37	0.39	0.04	0.30	0.12	0.30	0.11	0.40	0.03	0.09	0.64	−0.020	0.92
wj75SUV	0.16	0.42	0.37	0.045	0.28	0.14	0.29	0.13	0.38	0.04	0.07	0.71	−0.020	0.92
wjMaxSUV	0.14	0.47	0.36	0.05	0.27	0.16	0.27	0.15	0.37	0.05	0.07	0.71	−0.022	0.91

Values in bold are statistically significant.
↵^a Weighted joint volume SUVs (wjSUV) representing 25%, 50%, 75%, and maximum (100%) uptake (wj25SUV, wj50SUV, wj75SUV, and wjMaxSUV, respectively). CDAI: Clinical Disease Activity Index; HAQ: Health Assessment Questionnaire; DAS28: Disease Activity Score in 28 joints; CRP: C-reactive protein; FDG: ¹⁸F-fluorodeoxyglucose; ρ: Spearman rho; SDAI: Simple Disease Activity Index; SJC28: 28-joint swollen joint count; TJC28: 28-joint tender joint count.